Sheffield leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 85% of adults in Sheffield typically vote, above the U.S. average of about 62%. Among adults in Sheffield, ~21% vote Democratic, ~63% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Sheffield compares
Among cities within 25 miles, Sheffield leans more Republican than 32 of 74 neighbors.
Sheffield runs about 48 points more Republican than Pennsylvania as a whole.
Why Sheffield leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Sheffield, not a ranked or complete list of what matters most.
Sheffield votes Republican even though it is densely developed (about 22%, modestly below the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high white share with below-average college attainment predicts Republican voting, and Sheffield fits that profile on both counts.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Sheffield, PA sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Sheffield looks the way it does
Turnout in Sheffield sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hoovers, PA R+55
- Roystone, PA R+52
- Tiona, PA R+53
- Old Clarendon, PA R+53
- Henrys Mill, PA R+52
- Ludlow, PA R+52
- Stoneham, PA R+54
- Clarendon, PA R+51
- Brookston, PA R+50
Cities with Similar Populations
- Rollingwood, TX D+26
- Head of the Harbor, NY R+16
- Sherrard, IL R+29
- Lost Creek, WV R+61
- Lynchs Corner, NC R+27
- South Orrington, ME R+9
- Dulac, LA R+41
- Henry, TN R+70
- Poulan, GA R+58
- Fabius, NY R+26
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Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.